PROBLEM 6: CONTROL SIGNALS LOW FLAME SENSE DURING HEATING MODE

Condition

Possible Cause

Corrective Action/Comments

 

 

 

6.0

6.1.1

ACTION 1 − Check the sensor rod for proper loca-

 

 

− Unit operates correctly but the diag-

Sensor rod is improperly located on

tion on the burner. Properly locate the sensor rod

nostic lights flash low flame sense

the burner.

or replace if rod cannot be located correctly.

 

code.

 

 

 

ACTION 1 − Check sensor rod for contamination

 

 

 

6.1.2

or coated surface. Clean the sensor rod with steel

LED#1−Slow Flash

wool or replace sensor. DO NOT USE SAND PA-

Sensor rod is contaminated.

PER TO CLEAN ROD. SAND PAPER WILL

LED#2−Fast Flash

CONTRIBUTE TO THE CONTAMINATION

 

 

 

PROBLEM.

 

 

 

PROBLEM 7: INDOOR BLOWER FAILS TO OPERATE IN COOLING, HEATING, OR CONTINUOUS

FAN MODE

Condition

Possible Cause

Corrective Action/Comments

 

 

 

7.0

7.1.1

 

− Indoor blower fails to operate in

Miswiring of furnace or improper

ACTION 1− Correct wiring and/or replace any

loose connections. Check for correct wiring and

continuous fan, cooling, or heating

connections at control or indoor blow-

loose connections.

mode.

er motor.

 

 

 

 

 

7.1.2

ACTION 1 − Check for 120V at the various calls

 

for indoor blower by energizing "Y", "G", and "W"

 

120V is not being supplied to the

individually on the low voltage terminal strip. Note

 

that when "W’ is energized, the blower is delayed

 

indoor air blower or blower motor fail-

 

45 seconds. If there is 120V to each motor tap but

 

ure.

the blower does not operate, replace the motor.

 

 

 

 

7.1.3

ACTION 1 − If there is not 120V when "Y", "G", or

 

Defective control board

"W" is energized, replace the control.

 

 

 

 

 

 

7.1.4

ACTION 1 − Replace capacitor

 

Defective run capacitor

 

 

 

 

 

PROBLEM 8: RF STATIC DURING TIME FOR IGNITION

 

 

 

Condition

Possible Cause

Corrective Action/Comments

 

 

 

8.0

8.1.2

ACTION 1 − Call Technical Support, Dallas.

− AM radio interference.

Ignitor operation

 

 

 

 

Page 53

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Image 53
Lennox International Inc G61MP Nostic lights flash low flame sense Burner, LED#1−Slow Flash, Sensor rod is contaminated

G61MP specifications

Lennox International Inc. has long been a leader in HVAC solutions, and the G61MP gas furnace exemplifies the company's commitment to innovation and energy efficiency. This high-efficiency gas furnace operates with an Annual Fuel Utilization Efficiency (AFUE) of up to 96%, allowing homeowners to save significantly on energy costs while maintaining a comfortable indoor environment.

One of the primary features of the G61MP is its modulating gas valve. This technology enables the furnace to operate at multiple levels of heating output, ensuring that it can adjust its performance according to the home’s heating demands. By modulating the heating output, the G61MP maximizes efficiency and minimizes energy waste, providing a consistent temperature and improved comfort.

The G61MP also incorporates advanced two-stage heating, which enhances its performance by reducing temperature fluctuations in the home. This feature is especially beneficial during transitional weather periods when heating needs may vary widely. With its ability to operate on a lower stage most of the time, the furnace can produce quieter operation and reduced energy consumption.

In terms of design, the G61MP includes a sealed combustion chamber that draws air from outside the home for combustion, enhancing safety and efficiency. This design feature eliminates the need for indoor air, improving indoor air quality. The furnace is also equipped with a high-efficiency ECM blower motor that not only boosts comfort but operates quietly and uses less electricity compared to traditional motors.

Further enhancing its efficiency, the G61MP utilizes a variable-speed blower, which allows for precise control of airflow throughout the home. This results in better humidity control and improved air distribution, providing an overall more comfortable environment.

The Lennox G61MP is compatible with the iComfort S30 smart thermostat, allowing homeowners to control their heating remotely, adjust settings based on their schedules, and access energy usage data. This connectivity transforms the G61MP into an integral part of a smart home ecosystem, facilitating energy conservation and comfort optimization.

Lastly, the G61MP is designed with durability in mind. Its robust construction and high-quality materials ensure reliable performance and lengthy service life. Homeowners can feel assured that they are investing in a heating solution that will meet their needs for many winters to come. In summary, the Lennox G61MP gas furnace stands out with its high efficiency, advanced technology, and user-friendly features, making it a top choice for homeowners seeking exceptional heating performance.